<template>
  <div class="box">
    <div class="user-info-head">
      <img :src="options.img" class="img-circle img-lg" v-if="options.img" />
      <img src="../../../../assets/images/user.png" class="img-circle img-lg" v-else />
      <div :class="options.img ? '' : 'cover'"></div>
    </div>

    <el-dialog :class="'el-dialog-theme3'" :title="title" v-model="open" width="800px" append-to-body
      @opened="modalOpened" @close="closeDialog" draggable :close-on-click-modal="false">
      <el-row>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <vue-cropper ref="cropper" :img="selectedImg === '' ? options.img : selectedImg" :info="true"
            :autoCrop="options.autoCrop" :autoCropWidth="options.autoCropWidth" :autoCropHeight="options.autoCropHeight"
            :fixedBox="options.fixedBox" :outputType="options.outputType" @realTime="realTime" v-if="visible" />
        </el-col>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <div class="avatar-upload-preview">
            <img :src="options.previews.url" :style="options.previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
            <el-button>
              选择
              <el-icon class="el-icon--right">
                <Upload />
              </el-icon>
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{ span: 1, offset: 2 }" :md="2">
          <el-button icon="Plus" @click="changeScale(1)"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="Minus" @click="changeScale(-1)"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshRight" @click="rotateRight()"></el-button>
        </el-col>
        <el-col :lg="{ span: 2, offset: 6 }" :md="2">
          <el-button type="success" @click="uploadImg()">提 交</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>
  
<script setup>
import "vue-cropper/dist/index.css";
import { VueCropper } from "vue-cropper";
import { uploadImageAPI, showImageAPI } from "@/api/resource/instrumentItem"

const props = defineProps({
  userId: {
    type: Number
  }
})

watch(
  () => props.userId,
  () => {
    options.groupId = props.userId
    picPreivew()
  }
)

const { proxy } = getCurrentInstance();
const open = ref(false);
const visible = ref(false);
const title = ref("修改头像");
//图片裁剪数据
const options = reactive({
  img: "", // 裁剪图片的地址
  autoCrop: true, // 是否默认生成截图框
  autoCropWidth: 200, // 默认生成截图框宽度
  autoCropHeight: 200, // 默认生成截图框高度
  fixedBox: true, // 固定截图框大小 不允许改变
  outputType: "png", // 默认生成截图为PNG格式
  previews: {} //预览数据
});
const selectedImg = ref("")

/** 编辑头像 */
function editCropper(value) {
  value === 'closeDialog' ? open.value = false : open.value = true
}

/** 打开弹出层结束时的回调 */
function modalOpened() {
  visible.value = true;
}

/** 覆盖默认上传行为 */
function requestUpload() { }

/** 向左旋转 */
function rotateLeft() {
  proxy.$refs.cropper.rotateLeft();
}

/** 向右旋转 */
function rotateRight() {
  proxy.$refs.cropper.rotateRight();
}

/** 图片缩放 */
function changeScale(num) {
  num = num || 1;
  proxy.$refs.cropper.changeScale(num);
}

/** 上传预处理 */
function beforeUpload(file) {
  if (file.type.indexOf("image/") == -1) {
    proxy.$modal.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
  } else {
    const reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onload = () => {
      selectedImg.value = reader.result
    };
  }
}

const emits = defineEmits(["getFileId"]);

/** 上传图片 */
function uploadImg() {
  proxy.$refs.cropper.getCropBlob(data => {
    let formData = new FormData();
    formData.append("file", data);
    formData.append("groupId", options.groupId)
    formData.append("typeId", 20)

    if (options.fileId) {
      formData.append("fileId", options.fileId)
    }

    uploadImageAPI(formData).then(response => {
      open.value = false;
      proxy.$download.previewPicById(response.data.fileId)
        .then((resp) => {
          options.img = resp;
        })
      options.fileId = response.data.fileId
      emits('getFileId', options.fileId)
      proxy.$modal.msgSuccess("上传成功");
      visible.value = false;
    });
  });
}

/** 实时预览 */
function realTime(data) {
  options.previews = data;
}

/** 关闭窗口 */
function closeDialog() {
  options.visible = false;
  selectedImg.value = ""
}

// 回显图片
async function picPreivew() {
  if (!options.groupId) return

  const res = await showImageAPI({ groupId: options.groupId, typeId: 20 })
  if (res.data.length > 0) {
    options.fileId = res.data[0]?.fileId;
    proxy.$download.previewPicById(options.fileId)
      .then((resp) => {
        options.img = resp
      })
  } else {
    options.img = ""
  }
}

defineExpose({
  picPreivew,
  editCropper,
  options
})
</script>
  
<style lang='scss' scoped>
.box {
  display: flex;
  justify-content: space-around;
}

.user-info-head {
  position: relative;
  display: inline-block;
  margin: 21px 60px 0 0;
  height: 120px;
  line-height: 120px;
}

.user-info-head .cover::after {
  content: "+";
  display: inline-block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  color: #999;
  font-size: 35px;
}

.user-info-head:hover:after {
  content: "+";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  color: #eee;
  background: rgba(0, 0, 0, 0.5);
  font-size: 35px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  cursor: pointer;
}

.img-lg {
  height: 100%;
  text-align: center;
}
</style>